USPS built and secretly tested a mobile voting system before 2020 https://t.co/KoAvUuAN0c via [Twitter](https://twitter.com/SJenkins/status/1470567867158515717)
USPS built and secretly tested a mobile voting system before 2020 https://t.co/KoAvUuAN0c
— Steve Jenkins (@SJenkins) December 14, 2021